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Electron Backscatter Diffraction (EBSD) as a tool for detection of coral diagenesis

Research output: Contribution to journalArticle

Author(s)

M Cusack, J England, P Dalbeck, AW Tudhope, AE Fallick, Nicola Allison

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Abstract

Fine-scale structures of intact modern and fossil coralline skeletons were analysed to determine alteration to secondary cements and phases using electron backscatter diffraction (EBSD). EBSD analysis revealed secondary aragonite cements in endolithic borings in the modern skeleton and whole dissepiments of the fossil skeleton replaced by calcite, despite X-ray diffraction (XRD) bulk analysis of the general area suggesting only aragonite was present. Non-destructive, in situ screening of coral samples by EBSD analysis provides a valuable tool for assessing the extent of alteration and can determine which areas may produce more reliable climate proxy data.

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Original languageEnglish
Pages (from-to)905-911
Number of pages7
JournalCoral Reefs
Volume27
DOIs
Publication statusPublished - Dec 2008

    Research areas

  • Electron backscatter diffraction (EBSD), Diagenesis, Calcite, Dissepiments, PAPUA-NEW-GUINEA, CLIMATE-CHANGE, EL-NINO, SOUTHERN-OSCILLATION, CALCIUM-CARBONATE, SKELETAL GROWTH, HUON-PENINSULA, MASSIVE CORALS, CATHODE RAYS, ARAGONITE

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